Guilan Cohort Study

Cohort facts:

Location of cohort: Some-e Sara – Guilan Province

Main Ethnicities of participants: Gilaki

Conducted by: Guilan University of Medical Sciences


  • Farahnaz Joukar, PhD
  • Mohammad Reza Naghipour, PhD

Study Execution:

The PERSIAN Cohort Study started in Some’e Sara in October 2014, and enrollment ended in January 2017.

Current Activity: Guilan Cohort Study is currently performing annual follow-ups for the entire cohort population and also conducting a repeated measurement phase for 30% of the enrolled participants who have been selected randomly.

Principal Investigator: Fariborz Mansour-Ghanaei, MD

Overview of Cohort Population

Final Enrolled Sample Size
10,520 individuals
Gender Distribution
46% Male
54% Female
Age Distribution

33% ----35-44 years
36%----45-54 years
25%----55-64 years

Residence Type
44% Urban
56% Rural

Contact information